Water-tube steam-boiler.



C. E. WARD..

WATER TUBE STEAM BOILER. APPLICATION FlLED MAR. 14, 1916- RENEWED MAR. 1.191s.

1,262,14E5, Patented Apr. 9,1918.

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Janie CHARLES E. V/ABD, OF CHARLESTON, WEST VIRGINIA.

WATER-TUBE STEAIVI-BGILER.

Application filed March 14, 1916, Serial No. 84,082. Renewed March 1, 1918.

To all whom it may concern:

Be it known that 1, CHARLES E. WARD, a citizen of the United States, residing. at Charleston, in the county of Kanawha and State of Vest Virginia, have invented certain new and useful Improvements in Water-Tube Steam-Boilers, of which the following is a specification.

This invention relates to watertube steam boilers, more particularly to those watertube boilers provided with upper and lower headers connected by sets or banks of tubes, one bank being above the other with a baffle plate or plates arranged between them, and the whole so arranged that upon the boiler being fired, the circulation is established upwardly by way of one bank of tubes, usually the lower bank, and downwardly through the tubes of the other bank of tubes.

The object of this invention is the production of a watertube steam boiler of the character mentioned wherein the parts are of special construction, proportion and arrangement with respect to each other, and wherein more than one pair of banks of tubes are employed, one pair of banks of tubes being arranged above another. It is believed that a material increase in steaming efiiciency is attained by the particular construction and arrangement of the parts herein set forth.

Cf the accompanying drawings illustrating this invention, Figure 1 represents a watertube steam boiler constructed in accordance with this invention, and shown in vertical section, the section extending from front to rear of the boiler. Fig. 2 is a vertical transverse section of the lower header taken on the broken line rca2 of Fig. 1, and showing the pairs of banks of tubes, with the positions of the interposed baflie plates. Fig. 3 is an enlarged vertical section of the upper portion of the lower header, showing the sectional downflow divider plate and the supporting and guiding means therefor, and the connection with one wall of the header. Fig. 4- is a cross-section, horizontally, on the broken line y-y of Fig. 3, the same scale of drawings being retained. The same letter refers to the same part.

Considering the drawings, in Fig. 1 there will be noted exposed to the furnace A, a row of lower tubes a, which support the baffie plate or plates B. The door of the furnace is adjacent to the lower header 6, and the lower bank of tubes C incline upwardly Specification of Letters Patent.

. bank of tubes J and Patented Apr. 9, 1918.

Serial No. 219,898.

and rearwardly, from the lower header 2) to the upper header 0. The lowest or first baliie plate B has one end in contact with or near tne lower header.

Above the lowest bank of tubes C and resting thereon is a second baflle plate D, having one end against or near the upper header 0. The battle plates may in practice be formed of sections laid across the tubes, but, as a whole, each bafiie plate eX- tends lengthwise of the tubes from a position against or near one of the headers.

Above the second batlie plate D is the second bank of tubes E, the tubes being the same in number and size as those of the bank C. The banks of tubes C and E are considered in this description as a pair of banks of tubes, and they are the lower pair of banks of tubes as illustrated in Fig. l of the drawings. 7

Upon the tubes E is supported the third baffle plate F, having one end near or against the lower header.

Connecting the headers above the baffle plate F is the upper pair of banks or tubes. Of the upper pair, the lower member or bank G carries the fourth bafiie plate H, and the bank of tubes J, arranged above the baffie plate H is the compleinental member of the upper pair of banks. It will be observed that the upper pair of banks of tubes comprises less number of tubes than the banks of the lower pair of banks of tubes, and there is less passage area between the ,upper battle plates, as the hot gases from the furnace give off some portion of their heat to the lower pair of banks of tubes and contract correspondingly in volume. Above the usually supported there by is a fifth baffle plate j, having one end against or near the lower header, and by which the hot gases are directed to the eX- terior through the top of the casing of the boiler.

Connected with the lower header at the top thereof is the drum K, and a number of tubes, such as the tube L, connect the drum and the upper header. In passing out, the hot gases pour over and around the tubes L.

As best shown in Figs. 3 and 4, the lower header 1) has within it near the top a removable, sectional downflow divider plate M. The sections of the plate M are supported at the bottom and connected with the wall of the header by the curved bracket plate N, and the sections are held in vertical position flow of the circulating water and in the vertical grooves in in the vertical partitions O that divide the headers into vertical chamber as illustrated also in Fig. 2, in which figure the relative arrangements of the banks 01 tubes and the battle plates are set forth. It will be noted that the curved bracket plate N connects the downtlow di vider plate with the wall ol the header just below the bank of tubes G, which is the lower bank of the upper pair of banks oil tubes, and the purpose is LO divide the downthe reed water between the pairs of "anks of tubes. It will be understood that each. vertical chamber of the header is provided with the sectional plate M and the cm ved or inclined supporting bracket bl. it will also be understood that the plate ll l may comprise any number of sections, sity arises for a high or a divider plate. ()rc inarily, plate vl extend to the top of the hes they may be introduced into the grooves in or removed therefrom by drum with the hand or suitable to l. In explaining the operation. of tion, let it be assumed that a constructor. in accordance there 7. up. it is found in pr; definitely determined by trial, 1 pendent circulating systems a; in the one body 0t water cont boiler. The directions of the the two systems are indicated l. line arrows. in the lower i tubes, the circulation is upv. tubes C and downward throt In the upper par tubes, the circulation is upw according as the necesio'w dowellow t e ections of tubes G and downward through the tubes I. Not only is the circulation thus established and iziaiiitained, but, it is particularly rapid, and, the circulation in the lower pair of banks of tubes is very quickl set up, In; the boiler constructed in accor 1. this 'nvention a very quick feed water or other do K is divided by the plate M b pairs of banks or "ubes, is believed to have been clearly set forth hereinabove.

Having now described this invention, and

Copies of explained the mode or. its operation, what I claim is 1. in a watertube boiler, the combination with upper and lower headers, of a drum connected with the lower header, upper and lower banks of tubes connected with the headers, and a downfiow divider plate arranged in the upper portion of the said lower header and connected with the inner wall of the header above the ends or" said lower bank of tubes and below the ends of said upper bank of tubes, the said downllow plate being constructed with removable sections whereby there may be formed in the header a downflow divider plate of greater or lessheight from its said connection with he wall of the header.

2. In a watertube steam boiler, the combination with a header havirg internal vertical partitions dividing the header into vertical chambers, the said partitions being each provided with vertical grooves, of re movable downliow divider plates movably fitting the said grooves in the parti i ns in each chamber of the header, and bracket plates in each chamber constructed to support the said divider plates in the said grooves, the said bracket plates b attached to a wall of the header in each chamber and constructed to close the space between the bottom of the said divider plates and the said wall.

In a wate'rtube steam boiler, the combination with a header having internal vertical partitions dividing the headers into v tical chambers, the said part c each provided with vertical grooves, o" movable downtlow divider plates each prising separable sections mom fitt the said grooves in the part ZlOllS a chamber of the header, and bracket plates in each chamber constructed to support the said sections or" the divider plate in the said rooves, the said bracket plates being attached to a wall of the header in each chainto close the space i the said divider plate and th In testimony whereof I aria my CHARLES a. were.

this patent may be obtained for cents each, by addressing the 'Q-ommissioner of Patents Washington, D. C. 

